91 capri xr2 wont crank over

I just replaced the oil pressure sender with a mechanical one, and now the car wont even crank over. any idea as to why? I can't find any loose connections/shorts so i dont think thats the problem. The fuel pump kicks on still so I dont think it's because the ECU wont let the starter kick over. I dont even hear the cylenoid kick. nothing.. any help would be appreciated.

What did you do with the existing wiring. I would leave the old one hooked up and install the mechanical one some where else. You must have grounded something when you made the change.

Acutally, the problem was quite simple. My dad pulled the old sender out and knocked off a wire from the starter cylenoid. I hooked the wire back up after discovering the problem and she runs like a charm now with the exception of the turbo wich seems to have a blown oil seal internally.